Rotary engine.



Patented Dec.' 12, 1911.

'ing t-he revolutions o the piston so that f -JSTATES'PATENT or y - 'Be itlmownthat-I, WInLr'HAm'MaNm-a subject of.l the .King o; Saxony, 'resident of Dresden, 'German 'have invented certain tricallyarrangedv piston is connected withl a disk mounted yulpon thev casing in such a manner that the s idin `vane is pulled durthe curvature of its edges istightly pressed against the inner wall of the cylinder, said sliding vanej'havingv further two vlateral elastic projections which also lbear agalnst the inner wall of the cylinder and serve to increase the tight joint betweenthe sliding;

vane and'. the cylinder.,

l The invention further consists in the regulation of the admission of the ex sive mlxture, and of the air for combustlon, of the exhaust of the burned gases and of the air which has been' drawn infor coolingwhich are all effected by a gearof particular construction. This gear consists of a casing mounted upon .the cylinder of the engine and having channels for` connecting the engine cylinder and the inletand loutletports. A hollow drum like plug is mounted 1n said casing which has an annular shoul- 'derbearing against the wall of the casin andvfurther a slot in its outer surface an which is controlled periodically by cams in such a manner-that the connecting `channels are alternatingly opened and closed.

In the accompanying drawings .the improved rotaryl engine is shown. a

` Figure 1 is a longitudinal section through the engine. Fig. 2 shows in elevation part of the cams for actuating the valveear. Fig.'3'represents in planview part-o the device for the automatic re-adjustment. Fig. 4 is a cross section'on line a-b of Fig. 3; Fig. 5 is a cross sectionof the engine;

wenn@ of rauen-raten. Pate application mea :une n, 1910.. is'emln; scam.

" withthe' The shaft 3 is fixed in thewell known man- .ner in the cylinder covers 4 and 5. lThe same The casing 24" has inlet :27 and channels 28, 29 leading I der. v`Said cylinder 1 has cavitles 30, 31 which communicate with the orifices of the channels 'teu-nec. 12", 1911.

56 rto 11 represe'zntA cross section the- Fl dihzsarent.V :positions of the regulating plug.

e nnprovedf engine consists of the conical rcyllnder 1 and-of the conical piston 2 keyed-.u `onthe shaft 3 which-is concentric rum but eccentric with the casing.

large endof the cylinder 1 is enlarged at 6 so thata shoulder is formed which` serves as abutment forthe disks '7 and `8.` A ball bearing 9 is arranged between the disks 7 and 8. The disk 7 is mounted upon a hub 10 of disk v8, on which it can revolve. U n

threaded parts of the shaft 3 nuts 11 an 12 are screwed which serve fork re-adjusting the osition of the piston-2 inthe cylinder 1. aid nuts have washers 12 running on ball bearings 13. Y

` The following deviceserves for the autov matic re-adjustment of different parts of the engine. A crown 14 is -formed on the outer surface of the disk 8. `Conical rollers 16 mounted on'shafts fixed the inner wall of vthe `casing are Acontinually pressed by springs 17 against? the inclined bottom'ofgroove 15 of saidycrown' 14.` Thepre'ssure exerted by the rollers 16 upon the crown' Mis trans- "mitted in 'vertical' direction to the disk 7 and to" theA iston 2. Said 4rollers F16 serve for uniform y pressin'gfthe disk 8,. against the joint rin where y all-the revolving partsarel we l tightened." 4Thisy device is covered by the vaulted lid 5. v

In a radial slot 18 extendinl over the entire length of the piston 2 a sding vane 19 is locatedwhich is connectedwiththe disk 7 by means of a bolt 20. Said sliding vane has a curved outer edge which slides alongv the inner wall of the cylinder 1 and is kept in contact with the same owing tothe disk 7 to which it is xed. To-insurean absolutely `tight joint between said slide valve and the cylinder wall blades 21, 22 of elastic material are provided which are fixed to said sliding vane and slidealong said cylinder wall.

Thefvalve gear is mounted upon the boss 23 of the cylinder 1. It consists of the casing 24 and of the hollow plug 25 mounted in the channels 26, to the cylin- 34 ed upon the driving shaft and having. been two teeth.

The plug 25 is eccentrically mounted in the boring of the casing 24 and it bears against the wall of said boring on the one hand with its rib 35,extending over `the entire length .of the tplug, and on the ace at the pointl which is situated opposite said rib. At

other hand wlth its sur `int Vof the surface the plug has a passage 38. Two hollow spaces f' 36, 37 are thus formed between the plug and the wall ofthe boring of the casing.

The engine operates as follows The piston 2 revolves inthe cylinder 1 and its periphery bears against the part 39 -of the inner wall of the cylinder, said part being situated between the channels 28 and 29. The space formed between the` cylinder wall and the piston, owing to the eccentric position of the piston in the cylinder, is separated into two compartments by the sliding vane 19. The e ine has a three-revolution cycle and its wor begins by drawing in the explosive mixture, the ',plug 25 being in thef position shown in 6, and the suction channel 26 communicating with channel 28 (see' Figs. 6 to 11). The sliding vane 19 whichgat this moment has already passed the channel 28, will now during almost one complete revolution produce a suction until the sliding vane 19 has reached the point 39 of the wall ofthe cylinder turning in the direction of the arrow (Fi 7). At this moment the plug is turned or one sixth of its perimeter as the first tooth of the disk 34 en ages with the corresponding tooth of the disk 33, the plug being thus brought 4to the position shown in Fig. 7.that is to say the cylinder is completely shut off from suction 26. The sliding vane 19 continues its4 way and passes over point l10; it now compresses the gas. At the moment when the sliding vane 19 passes the point 40 the second cam of the disk 34 turns the plug 25 for'one sixth of a revolution and brings the same to theposition Fig. 8; the cylinder communicates with thelboring of the plug 25' and at the same time with the suction tube 26 throughthe channel 28. The sliding vane compresses the gas driving the same toward the channel 29; simultaneously cooling Aair is drawn in behind said sliding vane through the-suction 26 which is alternatingly con- 'nect'ed with the source of gas or air by a convenient device not shown in the drawing. When the sliding vane 19 has again reached the position 40 the compressed charge has been comtpletely introduced into the inner space of e plug 25 and said plug has been turned for another sixth of a revolution so that it has reached the position Fig. 9 in which the communication between the inner space of-the plug and the cylinder is compaestely shut of, After the sliding vane 19 passed the point 40, the lug has turned for one o a revolution and the inner sE-lce of said plug communicates with the c der throug the suction 26, and the aust channel 27 communicates with the cylinder by means of the channel 29, was shown in'F' 10. At this moment the chargeis ignite in any convenient manner by an igniting mechanism which is not shownin the drawings as it does not form` art of the invention, and \ex plodes. J e expan gas acts upon the sliding vane 19 and drives the same so that the cooling air previously drawn in is exhausted through the channel 29. This acplis; is completed when the sliding vane 19 taneously the l has been turned for one sixth of a-.revo ution (Fig. 11) andthe communication between the exhaust and the cylinder is maintained, the communication between the suction channel and the cylinder is shut o until the vane 19 has again left the part 40 and the plug 25 turned for another sixth of a revolution, that is to say has returned to the position shown in Fig. 6. The suction channel 26 and the exhaust channel 27 communicate bth with -the cylinder. The vane begins again to draw in the gas and to exhaust the burned gases. The cycle begins again. The sliding vane or piston therefore draws in the explosive mixture at the first revolution, compresses the same at the second vrevolution in simultaneously drawing in the cooling air and at the third revolution, after the explosion has taken place, it drives out the cooling air previously drawn in. This improved engine requires comparatively little fuel and is nevertheless of eat eiiiciency for the reason that the sli vane acts like a lever whereby the expansion of the gases is much better utilized than is otherwise the case.

' I claim A 1. An improved -rotary-engine, comprising in combination a conical cylinder having an inlet channel and an exhaust channel at its upper end, a fixed cover and a removable cover of said cylinder, a shaft mounted in saidcovers so. that it is concen;

tric with the drum but eccentric in the casing, vand a 'conical piston fixed upon said shaft `so that its circumference is in contact with tlie inner wall of said cylinder between said channels of the cylinder, said piston having a radial slot extending overA the entire length of the same, a sliding vane movably located in said slot of the piston so that'its rounded oi edge is in contact with the c linder wall, means for securing the air tight joint between said vane and said cylinder wall, a disk centrally mounted upon said shaft and rigidly conagain reached the position 39.` Simulnected withsaid sliding vane, means for vthe automatic re-adjustment of the said.. revoluble arts and means for regulating the admisslon of th'e'e'xplosivev mixture an the vexhaust 'of the burned gasessubstantiallyy as described and shown and for the purpose' set forth.

2. An, improved rotary-engine, 'com between said channels of the cylinder, said piston having a radial'slot extending overv its entire length, a sliding vane movably located in said slot of the piston sc jthatits roundedof edge is in'contact withthe inner .wall'of vthe cylinder', two blades ofl elastic:

material fixed with one end each `on oneside of said sliding vaneand. sliding other free end along said innerwall of the cylinder for securing the airtight joint be-vy tween the edge vof the. sliding vane and the cylinder wall,I a disk mounted upon said shaft so that itcan freely revolve around the same, a bolt which fixes saiddisk upon said sliding vanea second disk revolubly mounted upon said-shaft, a hub of said second disk upon which the first disk is mountp ed, a nut screwed upon -the outer threaded part of the shaft and a nut screwed upon the inner threaded part of the shaft for re-adjusting the arts mounted upon said shaft means for the automatic re-adjustment of 'v said revoluble parts and means for regulating the admission `of the explosive mixture and the exhaust of the burned gases, substantially as describedl and shownand for thepurpose set forth. p v e 3. An improved rotary-engine2 com risv ing in combination a conical cylinder. av-

ing aninlet and an .exhaust channel, a xed cover and a removable vaulted cover of said cylinder, a shaft mounted in sadpcovers'so that it projects with both ends from said cylinder, sol that it is concentric with the drum but eccentricjn the casing, an outer and an inner threaded part of said shaft, a conical piston fixed on saidshaft so that tween the sliding a revoluble disk fixed to said sliding vane with the its'cvircui'nference is contact with the inner wall of the cylinder between said channels, said piston-,having a radial slot extending over its entire length, a sliding vane in sai slot, means for securing a tight joint bevane and the cylinder wall,

and mounted in the outer end .of the cylin- 'der soV as-to` close its conical part, a disk jmount'ed -upon vsaid shaft so that it can be displaced 1n -axial direction, an outwardly extendingilange of said disk `having radial grooves with inwardly inclined bottom` parts, conical rollers vin`said grooves and Asprings for continually pressin said rollers against kthe inclined bottom o the grooves to automatically re-.adjust the revoluble parts mounted onthe shaft, and means for regulating the A'admission of. the'f explosive 'mixture to the'cylinder and the exhaust of Ithefburned gasesfrom the cylindr,, substantially.' as described .and shown and for the purpose vset forth.. e

An improved rotary-engine2 com "ris,

ing combination 'a conicalcyli'nder av-A mg a fixed and aremovable co'ver, a shaft' `mounted1n said covers, so that 1t 1sv concentric `withxthe drum but eccentric in the casing, va-bossupon the upper end of said cyl'- in e having ,an explosion chamber and two channels for connecting said chamber vwith the cylinder, and respectively with the admission of the explosive mixture and with the exhaust tube for the burned gases, a

valve in said chamber, atoothed disk mounted on the outer end of said valve and a toothed disk mounted on the shaft of the piston for regulating -the position of said valve, a conical piston xed on said shaft so that its circumference is in contact with the inner wall of the cylinder between said channels, said piston having a radial slot, .a slidmg vane 1n said slot, means for securin a vane', means for the automatic re-adjustment ofthe revoluble parts mounted on said shaft and means for the re-adjustment of the said parts by shown and for the-purpose set forth.

In witness whereof lI have hereunto set .l

my hand in the presence of two witnesses.

' WILLY HARTMANN.' Witnesses: v

F. VVEIDL,4 a Palin Almas.

hand, substantially as described and tight joint between the edgev of said sliding vane and the inner wall of the cylinder, a disk fixed on said shaft'and on said sliding. 

